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scene: Make SurfaceItem provide device texture coordinates

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The main motivation behind this change is to make the ItemRendererOpenGL
use a homogeneous coordinate space for texture coordinates in order to
simplify rendering code.

The device pixels have been chosen because they are more agnostic about
the graphics api.
This commit is contained in:
Vlad Zahorodnii 2024-08-11 19:51:03 +03:00
parent 8a5f469f95
commit f002e20354
2 changed files with 5 additions and 5 deletions
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2
src/scene/itemrenderer_opengl.cpp
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@ -195,7 +195,7 @@ void ItemRendererOpenGL::createRenderNode(Item *item, RenderContext *context)
.transformMatrix = context->transformStack.top(),
.opacity = context->opacityStack.top(),
.hasAlpha = pixmap->hasAlphaChannel(),
.coordinateType = NormalizedCoordinates,
.coordinateType = UnnormalizedCoordinates,
.colorDescription = item->colorDescription(),
.renderingIntent = item->renderingIntent(),
.bufferReleasePoint = surfaceItem->bufferReleasePoint(),

8
src/scene/surfaceitem.cpp
View file

@ -255,10 +255,10 @@ WindowQuadList SurfaceItem::buildQuads() const
const QPointF bufferBottomRight = snapToPixelGridF(m_bufferSourceBox.topLeft() + m_surfaceToBufferTransform.map(QPointF(rect.right() * xScale, rect.bottom() * yScale), sourceBox.size()));
const QPointF bufferBottomLeft = snapToPixelGridF(m_bufferSourceBox.topLeft() + m_surfaceToBufferTransform.map(QPointF(rect.left() * xScale, rect.bottom() * yScale), sourceBox.size()));
quad[0] = WindowVertex(rect.topLeft(), QPointF{bufferTopLeft.x() / m_bufferSize.width(), bufferTopLeft.y() / m_bufferSize.height()});
quad[1] = WindowVertex(rect.topRight(), QPointF{bufferTopRight.x() / m_bufferSize.width(), bufferTopRight.y() / m_bufferSize.height()});
quad[2] = WindowVertex(rect.bottomRight(), QPointF{bufferBottomRight.x() / m_bufferSize.width(), bufferBottomRight.y() / m_bufferSize.height()});
quad[3] = WindowVertex(rect.bottomLeft(), QPointF{bufferBottomLeft.x() / m_bufferSize.width(), bufferBottomLeft.y() / m_bufferSize.height()});
quad[0] = WindowVertex(rect.topLeft(), bufferTopLeft);
quad[1] = WindowVertex(rect.topRight(), bufferTopRight);
quad[2] = WindowVertex(rect.bottomRight(), bufferBottomRight);
quad[3] = WindowVertex(rect.bottomLeft(), bufferBottomLeft);
quads << quad;
}